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Abstract

This is a comment on a previously published paper by Hung and Tsao (J. Display Technol., vol. 9, June 2013).
The reference illuminant should be a CIE Daylight illuminant, not a Planckian
radiator, if the color temperature is higher than 5000
K . We find that the maximum white luminous efficacy of
radiation (MWLER) along Daylight locus is higher than Hung's results. Furthermore,
we calculate the MWLER for white light allowing chromaticity difference from
the Planckian or CIE Daylight locus on the CIE 1960 UV chromaticity diagram
up to 0.0054.

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